negotiator.boaframework.opponentmodel
Class BayesianModel

java.lang.Object
  negotiator.boaframework.OpponentModel
      negotiator.boaframework.opponentmodel.BayesianModel

public class BayesianModel
extends OpponentModel

Adapter for BayesianModel. Note that this model only works on small domains. Adapted by Mark Hendrikx to be compatible with the BOA framework. Tim Baarslag, Koen Hindriks, Mark Hendrikx, Alex Dirkzwager and Catholijn M. Jonker. Decoupling Negotiating Agents to Explore the Space of Negotiation Strategies

Author:

Mark Hendrikx

Field Summary

Fields inherited from class negotiator.boaframework.OpponentModel

negotiationSession, opponentUtilitySpace

Constructor Summary

BayesianModel()

Method Summary

void	cleanUp() Removes references to the objects used by the opponent model.
double	getBidEvaluation(Bid bid) Determines the utility of a bid according to the preference profile.
java.lang.String	getName()
UtilitySpace	getOpponentUtilitySpace()
double	getWeight(Issue issue) Returns the weight of a particular issue in the domain.
void	init(NegotiationSession negotiationSession, java.util.HashMap<java.lang.String,java.lang.Double> parameters) Initializes the opponent model.
void	updateModel(Bid opponentBid, double time) Update the opponent model by updating all hypotheses about the opponent's preference profile.

Methods inherited from class negotiator.boaframework.OpponentModel

endSession, getIssueWeights, init, isCleared, loadData, setOpponentUtilitySpace, setOpponentUtilitySpace, storeData, updateModel

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

BayesianModel

public BayesianModel()

Method Detail

init

public void init(NegotiationSession negotiationSession,
                 java.util.HashMap<java.lang.String,java.lang.Double> parameters)
          throws java.lang.Exception

Initializes the opponent model. If the parameter m is set to a value greater than zero, only the best hypothesis about the opponent's utility space is used.

Overrides:

init in class OpponentModel

Parameters:

negotiationSession - reference to the state of the negotiation

Throws:

java.lang.Exception

updateModel

public void updateModel(Bid opponentBid,
                        double time)

Update the opponent model by updating all hypotheses about the opponent's preference profile.

Specified by:

updateModel in class OpponentModel

Parameters:

opponentBid -

time - of offering

getBidEvaluation

public double getBidEvaluation(Bid bid)

Description copied from class: OpponentModel

Determines the utility of a bid according to the preference profile.

Overrides:

getBidEvaluation in class OpponentModel

Parameters:

bid - of which the utility is calculated.

Returns:

Utility of the bid

getWeight

public double getWeight(Issue issue)

Description copied from class: OpponentModel

Returns the weight of a particular issue in the domain.

Overrides:

getWeight in class OpponentModel

Parameters:

issue - from which the weight should be returned

Returns:

estimated issue weight of the given issue.

getOpponentUtilitySpace

public UtilitySpace getOpponentUtilitySpace()

Overrides:

getOpponentUtilitySpace in class OpponentModel

Returns:

utilityspace created by using the opponent model adapter.

cleanUp

public void cleanUp()

Description copied from class: OpponentModel

Removes references to the objects used by the opponent model.

Overrides:

cleanUp in class OpponentModel

getName

public java.lang.String getName()

Overrides:

getName in class OpponentModel

Returns:

name of the opponent model.